Water Pump Impeller Kit – Fits Yamaha 6A/8A/15A 2-Stroke Outboards (Replaces 655-44352-09-00)

Water Pump Impeller Kit – Fits Yamaha 6A/8A/15A 2-Stroke Outboards (Replaces 655-44352-09-00)

This water pump impeller is a direct replacement for various Yamaha 2-stroke outboard engines, primarily 6 HP and 8 HP models manufactured between 1985 and 1996, including the 6A, 8A, and P165 series. It also fits select 15A models. Please verify your engine model and original part number against the compatibility tables below before ordering.

This component is engineered to meet or exceed original equipment specifications, ensuring reliable cooling performance. It serves as a direct replacement for Yamaha part numbers 655-44352-09-00, 647-44352-00, and 662-44352-01-00, as well as several aftermarket equivalents.

• Installation Type: Key Drive
• Material: High-durability Neoprene rubber
• Blade Count: 6

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Water Pump Impeller (Replaces 655-44352-09-00)

Explosion Diagram

Installation Guide

1. Disconnect the negative battery cable for safety.
2. Remove the lower unit (gearcase) from the outboard motor. You may need to disconnect the shift linkage.
3. Locate and unbolt the water pump housing, typically secured with four bolts.
4. Carefully lift the housing off, noting the rotational direction of the existing impeller blades.
5. Remove the old impeller. You may need to remove the impeller key from the driveshaft first.
6. Thoroughly clean the inside of the pump housing and inspect it for any scoring, warping, or corrosion. Replace if damaged.
7. Install the new impeller key into the driveshaft slot.
8. Lubricate the new impeller and the inside of the housing with a marine-grade grease or soap-and-water solution.
9. Slide the new impeller onto the driveshaft, twisting it in the same direction as the original (typically clockwise) to seat the blades correctly.
10. Reinstall the water pump housing, ensuring a proper seal, and tighten the bolts to the manufacturer's torque specifications.
11. Reattach the lower unit and reconnect the shift linkage.
12. Once fully assembled, test the engine in water to confirm a strong and steady stream from the cooling system's telltale outlet.

Troubleshooting & FAQ

How do I confirm this impeller fits my engine?
Confirm your engine's model, horsepower, and year against our compatibility chart. This impeller fits various Yamaha 2-Stroke 6HP and 8HP models from 1985-1996. The most reliable method is to match your existing part number to one of the cross-references provided, such as Yamaha 655-44352-09-00 or Mercury 47-95611M.

What are the signs of a failing water pump impeller?
The most common signs include a weak or non-existent water stream from the tell-tale outlet, engine overheating alarms, or steam from the exhaust. Reduced engine performance can also occur when the motor is running hot.

How often should I replace the water pump impeller?
For preventative maintenance, we recommend replacing the impeller every 1-2 years or every 100-200 hours of operation. This interval should be shorter if you frequently operate in sandy, silty, or saltwater conditions.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.